diff --git a/mate-build-base.sh b/mate-build-base.sh
index fffef0e..20c18fd 100755
--- a/mate-build-base.sh
+++ b/mate-build-base.sh
@@ -76,7 +76,7 @@ for dir in \
   build=$(cat ${package}.SlackBuild | grep "BUILD:" | cut -d "-" -f2 | rev | cut -c 2- | rev)
 
   # Check for duplicate sources
-  sourcefile="$(ls -l $MSBROOT/$dir/${package}-*.tar.?z* | wc -l)"
+  sourcefile="$(ls -l $MSBROOT/$dir/${package}-*.tar.?z* 2>/dev/null | wc -l)"
   if [ $sourcefile -gt 1 ]; then
     echo "You have following duplicate sources:"
     ls $MSBROOT/$dir/${package}-*.tar.?z* | cut -d " " -f1
@@ -87,7 +87,7 @@ for dir in \
   # The real build starts here
   sh ${package}.SlackBuild || exit 1
   if [ "$INST" = "1" ]; then
-    PACKAGE=`ls $TMP/${package}-${version}-*-${build}*.txz`
+    PACKAGE=$(ls $TMP/${package}-${version}-*-${build}*.txz 2>/dev/null)
     if [ -f "$PACKAGE" ]; then
       upgradepkg --install-new --reinstall "$PACKAGE"
     else
diff --git a/mate-build-deps.sh b/mate-build-deps.sh
index 076c0e9..6156c07 100755
--- a/mate-build-deps.sh
+++ b/mate-build-deps.sh
@@ -80,7 +80,7 @@ for dir in \
   build=$(cat ${package}.SlackBuild | grep "BUILD:" | cut -d "-" -f2 | rev | cut -c 2- | rev)
 
   # Check for duplicate sources
-  sourcefile="$(ls -l $MSBROOT/$dir/${package}-*.tar.?z* | wc -l)"
+  sourcefile="$(ls -l $MSBROOT/$dir/${package}-*.tar.?z* 2>/dev/null | wc -l)"
   if [ $sourcefile -gt 1 ]; then
     echo "You have following duplicate sources:"
     ls $MSBROOT/$dir/${package}-*.tar.?z* | cut -d " " -f1
@@ -91,7 +91,7 @@ for dir in \
   # The real build starts here
   sh ${package}.SlackBuild || exit 1
   if [ "$INST" = "1" ]; then
-    PACKAGE=`ls $TMP/${package}-${version}-*-${build}*.txz`
+    PACKAGE=$(ls $TMP/${package}-${version}-*-${build}*.txz 2>/dev/null)
     if [ -f "$PACKAGE" ]; then
       upgradepkg --install-new --reinstall "$PACKAGE"
     else
diff --git a/mate-build-extra.sh b/mate-build-extra.sh
index ec4165e..9ab5d22 100755
--- a/mate-build-extra.sh
+++ b/mate-build-extra.sh
@@ -65,7 +65,7 @@ for dir in \
   build=$(cat ${package}.SlackBuild | grep "BUILD:" | cut -d "-" -f2 | rev | cut -c 2- | rev)
 
   # Check for duplicate sources
-  sourcefile="$(ls -l $MSBROOT/$dir/${package}-*.tar.?z* | wc -l)"
+  sourcefile="$(ls -l $MSBROOT/$dir/${package}-*.tar.?z* 2>/dev/null | wc -l)"
   if [ $sourcefile -gt 1 ]; then
     echo "You have following duplicate sources:"
     ls $MSBROOT/$dir/${package}-*.tar.?z* | cut -d " " -f1
@@ -76,7 +76,7 @@ for dir in \
   # The real build starts here
   sh ${package}.SlackBuild || exit 1
   if [ "$INST" = "1" ]; then
-    PACKAGE=`ls $TMP/${package}-${version}-*-${build}*.txz`
+    PACKAGE=$(ls $TMP/${package}-${version}-*-${build}*.txz 2>/dev/null)
     if [ -f "$PACKAGE" ]; then
       upgradepkg --install-new --reinstall "$PACKAGE"
     else